. 2023 May 23;14:2979. doi: 10.1038/s41467-023-38570-x

Table 4.

Parameters

Symbol	Description	Minimum	Maximum
τ_s	stomach time constant	0.5 min	10.0 min
τ_d	digestion time constant	0.0 min	20.0 min
τ_h	appetite increase time constant	50.0 min	300.0 min
n_f	nutritional value	0.1	1.0
$v_{f}^{eat}$	eating preferences	0.1	1.0
$v_{f}^{cache}$	caching preferences	0.0	1.0
η^eat	eating bias	-1.0	1.0
η^inspect	inspection bias	-2.0	0.5
s^inspect	inspection preference slope	0.0	5.0
η^cache	caching bias	-1.0	1.0
α^fresh	freshness learning rate	0.0	1.0
α^reward	retrieval reward learning rate	0.0	0.9
α^pilfer	pilfer learning rate	0.0	0.2
α^degrade	degradation learning rate	0.0	0.2
τ^hungry	hunger–caching time constant	100.0 min	500.0 min
$w_{0}^{cache}$	initial caching weights	0.0	1.0
δ^eat	eating time-out	10.0 s	200.0 s
δ^inspect	inspection time-out	10.0 s	200.0 s
δ^cache	caching time-out	10.0 s	200.0 s
δ^other	other action time-out	10.0 s	200.0 s
p^other	other action preference	0.0	1.0

The ranges [minimum, maximum] are manually set. The nutritional values, eating preferences and caching preferences are estimated for each food type f ∈ {mealworm, waxworm, peanut, suet_pellet, pinenut, kibble, cricket, pineapple, salami}; for stones only the caching preference is estimated.